Adding Day 2 Solution

csharp/Day2Solution.cs

@@ -0,0 +1,59 @@
+using System;
+using System.IO;
+
+namespace AOC2015
+{
+    class Day2Solution : Solution
+    {
+        public override int Day => 2;
+        public override string Name => "Day 2: I Was Told There Would Be No Math";
+
+        public override void Run()
+        {
+            string[] input = File.ReadAllLines("Input\\Day2Input.txt");
+
+            Console.WriteLine($"Part 1 Answer Example 1: {Part1(new string[] { "2x3x4" })}");
+            Console.WriteLine($"Part 1 Answer Example 2: {Part1(new string[] { "1x1x10" })}");
+            Console.WriteLine($"Part 1 Answer: {Part1(input)}");
+
+            Console.WriteLine($"Part 2 Answer Example 1: {Part2(new string[] { "2x3x4" })}");
+            Console.WriteLine($"Part 2 Answer Example 2: {Part2(new string[] { "1x1x10" })}");
+            Console.WriteLine($"Part 2 Answer: {Part2(input)}");
+        }
+
+        private int Part1(string[] input)
+        {
+            int result = 0;
+
+            for (int i = 0; i < input.Length; i++)
+            {
+                int[] args = Array.ConvertAll(input[i].Split('x'), s => int.Parse(s));
+
+                int length = args[0], width = args[1], height = args[2];
+                int area = 2 * length * width + 2 * width * height + 2 * height * length;
+                int extra = Math.Min(length * width, Math.Min(width * height, height * length));
+
+                result += area + extra;
+            }
+
+            return result;
+        }
+
+        private int Part2(string[] input)
+        {
+            int result = 0;
+            for (int i = 0; i < input.Length; i++)
+            {
+                int[] args = Array.ConvertAll(input[i].Split('x'), s => int.Parse(s));
+
+                int length = args[0], width = args[1], height = args[2];
+                int ribbonLength = Math.Min(length * 2 + width * 2, Math.Min(width * 2 + height * 2, length * 2 + height * 2));
+                int bowLength = length * width * height;
+
+                result += ribbonLength + bowLength;
+            }
+
+            return result;
+        }
+    }
+}